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What do you mean by “in stead of being just closed”, i. The datasheet even lists this among its features:. Often you’ll have many devices that are the same devices with different channels.
The datasheet even lists this among its features: Could you give an example of the IC with datassheet lot of NC pins? The next larger standard package is used, resulting in unused pins. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Dtasheetand our Terms of Service.
By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Between its D pin and everything else you [periodically] have hundreds of volts of rectified mains voltage. Also, I suppose NC pins might provide structural stability too, rather than leaving swathes of pins not attached to the PCB. Email Required, but never shown. There can be several reasons.
Though I suppose they wouldn’t list the pins as NC if that was a danger. This could easily result in multiple adjacent NC pins since the larger vatasheet may have many extra pins.
In addition to the reasons already given, NC pins are sometimes used to provide somewhere to attach guard traces to. A 6-output part could very well work the same as an 8-output part with the 2 NCs being in reality 2 outputs, but if the manufacturer doesn’t stand by and guarantee those “NC outputs”, then nobody will realistically ever use it in products intended to be sold to the market.
The pin removal between C and D is to increase safety by maximizing distance creepage and clearance. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.
What is a “closed terminal”? There will be a part that has 4, 6, 8 outputs of something, but are all offered in similar if not the same package, probably even the same pinout.
Home Questions Tags Users Unanswered. Not having a physical pin?
DBC datasheet, DBC datasheets, manuals for DBC electornic semiconductor part
Post as a guest Name. The die will not fit into a package with the appropriate number of pins. There’s no economic incentive to cut them out. So that’s one alternative for “NC”.
Datashet might have different versions of the same series part. What happens is, the silicon for the 4 output devices is the exact same as in s4066bc 8 output, except 4 pins are just labeled “NC” on the datasheet!
Null 4, 10 22 Furthermore, doing that would physically destabilize the package.
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I understood few of your points and I will work on to understand the rest! You may then ask, why not just connect them to something? Also remember that price is directly proportional to feature set. Some ICs have even NC continuously in accordance to their pin number.
There are probably daatasheet more, but my fingers are tired.